What is the antidote to romantic love that all too often exhausts itself, seemingly overnight? Might it be to join with a partner in a spiritual search, as philosopher Jacob Needleman posits here? By searching for the sacred with our lover, explains Needleman, we might well find the divine within them. The radiant poetry of the great Sufi mystic Rumi, the revelations of St. Paul, the moving tale of Philemon and Baucis, and the words of the world's sages become, with Needleman's guidance, a journey of discovery—one that reveals the secret to finding lasting love and staying together for a lifetime.